.NET Regex Tester - Regex Storm

Pattern

Input

51925120851209567
 // contains only numbers and is valid
B0031Y4M8S
 // contains combination of numbers and letters and is valid as well
ASDFFDSSDFGG

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2 matches found in about 2 milliseconds.

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Index	Position	Matched String
0	0	51925120851209567
1	59	B0031Y4M8S

51925120851209567
 // contains only numbers and is valid
B0031Y4M8S
 // contains combination of numbers and letters and is valid as well
ASDFFDSSDFGG

empty string
// contains only numbers and is valid
// contains combination of numbers and letters and is valid as well
ASDFFDSSDFGG